Ring laser gyro cavity length controller, frame compression

Details Ring laser gyro cavity length controller, frame compression Ring laser gyro cavity length controller, frame compression

1990-04-26

1992-07-21

Turner, Samuel

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

372 94, G01C 1966

Patent

active

051317516

ABSTRACT:
In a ring laser gyroscope a laser beam is directed to travel in a closed path, however, temperature variations can cause a change in the path length which, if not corrected, can result in drift and scale factor errors. The present invention controls the length of this closed path or cavity by applying a force to the gyro normal to the lasing plane. This is accomplished by inserting a bolt through the longitude axis of the gyro and by utilizing the bolt to apply or to relieve force therefore maintaining the cavity length constant over a given temperature range.

REFERENCES:
patent: 4321557 (1982-03-01), McNair
patent: 4386853 (1983-06-01), Ljung
patent: 4678335 (1987-07-01), Berg
patent: 4715713 (1987-12-01), Hutchings
patent: 4733966 (1988-03-01), Butler
patent: 4751718 (1988-06-01), Hanse et al.

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